Use Python 3.11 for the lint job in the build workflow

This is the latest minor release of Python so it makes sense to use it
as the default for this job.

Author: mcdonnnj

.github/workflows/build.yml

@@ -23,7 +23,7 @@ jobs:
       - id: setup-python
         uses: actions/setup-python@v4
         with:
-          python-version: "3.10"
+          python-version: "3.11"
       # We need the Go version and Go cache location for the actions/cache step,
       # so the Go installation must happen before that.
       - id: setup-go